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- Title
Acid-Base Pairs in Lewis Acidic Zeolites Promote Direct Aldol Reactions by Soft Enolization.
- Authors
Lewis, Jennifer D.; Van de Vyver, Stijn; Román‐Leshkov, Yuriy
- Abstract
Hf-, Sn-, and Zr-Beta zeolites catalyze the cross-aldol condensation of aromatic aldehydes with acetone under mild reaction conditions with near quantitative yields. NMR studies with isotopically labeled molecules confirm that acid-base pairs in the Si-O-M framework ensemble promote soft enolization through α-proton abstraction. The Lewis acidic zeolites maintain activity in the presence of water and, unlike traditional base catalysts, in acidic solutions.
- Subjects
ACID-base chemistry; LEWIS acids; ZEOLITES; CHEMICAL reactions; ALDOL condensation; ENOLIZATION
- Publication
Angewandte Chemie International Edition, 2015, Vol 54, Issue 34, p9835
- ISSN
1433-7851
- Publication type
Article
- DOI
10.1002/anie.201502939